schock



No Model.) 3 Sheets-Sheet 1.

G. SCHOCK. MASH STIRRBR.

No. 484,883. Patented Oct. 25, 1892.

WITNESSES; I /NVENTO/?.' "g a v W M 1 BWK'MA 74mm TTOHNEYS.

(No Model.) 3 Sheets-Sheet 2, G. SOHOGK.

MASH STIRRER. No. 484,883. Patented Oct. 25, 1892'.

WITNESSES: INVENTOR: I M M ATTORNEYS.

Tu: -onms PETERS 00., FNUTQLXTHQY, wnsumcwn, a. c.

UNITED STATES PATENT OFFICE;

GUSTAV SOI-IOCK, OF NEW YORK, N. Y.

MASH-STIRRER.

SPECIFICATION forming part of Letters Patent No. 484,883, dated October25, 1892.

Application filedMay 16,1892.

To all whom it may concern.-

Be it known that I, GUSTAV SOHOCK, aresident of the city, county, andState of New York, have invented an Improved Mash- Stirrer, of which thefollowing is a specification, reference beinghad to the accompanyingdrawings, forming part hereof, wherein Figure 1 represents a verticalcentral section of my improved mash-stirrer, the inner working partsbeing mainly indicated in side view. Fig. 2 is an enlarged verticalcentral section and side View of the inner or central portions of thestirring mechanism. Fig. 3 is a partial vertical section and side viewof the central portion of said stirring apparatus, the line 3 3, Fig. 2,indicating the plane of section, the lower sleeve around the verticalshaft being removed from this figure. Fig. 4 is a detail side view ofmechanism on the opposite side to that which is represented by Fig.3.Fig. 5 isa detail cross-section through the scraper. Fig. 6 is ahorizontal section on the line 6 6, Fig. 3.

This invention relates to sundry improvements on mash-stirrin gapparatus; and it consists of the new combinations and arrangements ofparts that are hereinafter more fully specified, and pointed out in theclaims.

In the accompanying drawings, the letter A represents the tub, which tubat its bottom has in the center a downwardly projecting socket ortubular extension at. Within this socket or tubular extension a iscontained a vertical tube or sleeve B, and within this vertical tube orsleeve is the main vertical shaft 0 of the apparatus. This shaft isstepped in a suitable framing at the lower end, and is by bevel gearingb or otherwise rotated from a driving-shaft D. At the upper end theshaft 0 is properly centered by being keyed (see key d, Fig. 2) in acircular box E, which runs in an annular bushing e, that is carried bythe roof f of the mash-tub A. It follows that when the shaft 0 rotatesthe box E is also revolved.

Returning to the vertical sleeve B, it will be noted that the same is bymeans of feathers or keys 9 (which are shown atthe lower part of Fig. 2)held in the socket a, so that it (the sleeve B) cannot revolve. Hencethe shaft 0 revolves within the sleeve B; but nevertheless the sleeve Bis capable ofvertical Serial No. 433,087- (No modeld adjustment, as willbe hereinafter more fully described. Where the sleeve B projectsupwardly from the socket a it is provided with a stuffing-box h, whichprevents any matter contained within the mash-tub from entering theannular space that is formed between the sleeve B and the socket a.

I deem it a very great advantage which results from thisconstructionnamely, that the stuffing-box his applied above the bottomof the mash-tub to exclude matter from the spaces within the socket a.In mash-stirring apparatus in which the main vertical shaft is drivenfrom below this placing of the stuffing-box above the bottom of themashtub is by me regarded as a novelty. Heretofore in mash-stirringapparatus having the vertical shaft driven from below the stuffingboxeswere placed below the bottom of the mash-tub, and consequently did notprevent moisture and impurities entering into the creases around theshaft and souring where they lodge, thereby contaminating the entirecontents of the mash-tub.

It is perfectly clear that although the drawings represent part of thesocket at extending upwardly from the bottom of the mash-tub, myinvention will apply where none of the socket a extends upwardly fromthe bottom of the mash-tub, provided the stuffing-box h is located abovesaid bottom.

lhe upper part of the sleeve B, which, as we have seen, isnon-revolving, is connected by brackets 'L' with an annular rack ortoothed ring F, which, since the sleeve B is non-revolving, is alsonon-revolving. By means of screws j, of which one is indicated by dottedlines in Fig. 2, and which are also indicated in Figs. 3 and 4., theupper part of the sleeve B is connected with a ring it, that is carriedby a revolving sleeve G in a groove formed within the outercircumference of said revolving sleeve G or of an enlargement thereof.By means of this connection j between the nonrevolving sleeve B and thering it, Which ring it is therefore also non-revolving, the sleeve B isrendered capable of vertical adjustment with the revolving sleeve G, ashereinafter described, and the ring 70, being carried in a groove of therevolving sleeve G, is permitted to remain non-revolving.

The sleeve G which has been described as a revolving sleeve, is by*keyor feather Z'(see Fig. 2) so connected with the shaft C that it willbe rotated whenever said shaftis rotated,

and that it will in turn revolve the stirring and scraping devices, towhich we will hereinafterrefer-that is to say, thesleeve-G'can riesradial arms H I in suitable numbers, and causes them to rotate withinthe mash-tub around the axis of the vertical shaft whenever thisvertical shaft is revolved. The radial arm I, together with abox m onthe sleeve of the vertical shaft C, and with it theshaft J, said shaft Jis at the same time also re-i volved on its own horizontal axis, andwith it the stirrer-blades,sothat these stirrer-blades will thoroughlyagitate the contents of them ash-tub, reaching every part thereof'd-uriu g their revolution around the vertical shaft,

and taking them up and distributing them duringtheirrevolution aroundthe horizontal The arm H, which also projects "from the rotary sleeve G,has 'downwardlyeprojecting rods 19, to whose lower ends thescraper-fFig. 5 illustrates this pivotal connection andshows that thescraper-blade extends farther above its pivot '4" than below the sameand that its lower'porshaft.

blade I is pivoted, as at 7'.

tion is sloped or tapered, asindicated. "Springs s, which are aifixed tothe upright arms p, bear against knobs t, that are affixed to the;

upper portion of the scraper-bladeand tend to keep the'scraper-bladenormally in its upright position, being the position which is in-*dicated by full lines in Fig. 5. iftwill be'observed, also, from Fig. 5that the springs s, which perform the function last mentioned,

extend quite a distance down 'below the knob t when thescraper-bladeisin itsnormal po-@ sition. The object of the scraper-bladeis to scrape and carry before it the mash'ormatter contained within themash-tub and present it in new positions to 'the'stirrer b'lades orinstrumentalities n; but it has been found 3 in practice that when bycarelessness'of the attendant or from some other 'cansethescraper-bladeisbrought in contact with too great a thickness'of matterin the mash-tub some part of the mechanism is lialblQIO break,-thestrain being excessive, especia'llyas thecontentsof a'mash-tub'aremoistened and 'very heavy.

with too great a height of matter it will swing on its pivot against thepressurexof the spring- 8 into the position which is indicated by dottedlines in Fig. 5, and will in that position be a most eifectivescrapertodisseminate the matter at the bottom of the mash-tub and obviat-e thedifficulty of too high an accumulation at any one point, and wheneverthe thickness of mash-or-other-obstruction is again reduced within themash-tubthepressure of the springs s will suffice to automatically raisethe scraperblade .back into its normal vertical position.

Ihavealso found that in mash-stirring devices it frequently occurs thatthe stirring i-nstrumentalities working necessarily atsome distance fromthe central shaft will cause an accumulation of mash-matter near thesaid central shaft, permitting it to rise. there, whereas at the greaterdistance from said shaft the mash will be lesst'hick. "-lo :pre- Ventthis accu rnu'lation of mash 'near the shaft, '1 Ihavesecured to thearmH near the shaft a pendent rod uywhich has spirally-arranged blades 1),thatextendtoward the central'shaft *0, coming as closetherdtoaspossiblq. 'Ihese blades user've to move the mash away fromthecentral'shaft and its neighborhood "and to prevent the centralaccumulation mentioned. v

It remains to describe *how for the purpose of cleaning and "forotherpurposes the entire stirring mechanism may'be'raisedorlowered,togetherwith the non-revolvingsleeve B. 'To this end I support 1n the'rotary box E, which is carried at the upper part *of the shaftC, "threetoothed wheels 10 w m. The centralone of these toothed wheels-etcwit,t'he'whee'l :z:- carries on an upwardly-extending stem z'a frictionor toothed wheel'y, near which there are placed upona horizontal shaftM'f'rictioncones a and b, as shown in Fig. 2. The central wheel wm'eshes into the toothed wheels w w, as indicated in :Fig. 6. Each ofthese toothed wheels w w connects rigidlywith a dowrrw'ardly-extendin gscrew N, there being *two such screws, as shown "in Fig. 3, one for eachof said wheels. These screws'mesh into "the threads of nuts 01 thatare-carried bythe rotary sleeve G. Normally when both conesother-contact with the whee'l y. This can "be done by a "shipping-lever'0, which is indicatedin'F-ig-Z. When bymeans of this'ship- To obviatethe injury to the parts of the apparatus from the cause just named,'Ihave pivoted the scraper-blade and caused its 'upping-lever one of these"cones a b is thrown against the wheel y,-said w'heel 'y'is revolved onits own axis, and consequently the 'central toothed wheel w'is alsorevolved in one certain "direction. The screws N N'a'rethereby turned toIiftthesleeireG orto lower it, according to the come a '"biwhich hasbeen thrown into connection-that is to say, 'by moving theshipping-leverO in one direction the screws will be caused to raise, andby'moving it in the other direction they will be caused to lower thesleeve G, and when they do raise or lower the sleeve G they also bymeans of the connecting-ring k and screws 3' raise or lower in likedegree the n0n-revolving sleeve B, so that the relative distance betweenthe annular rack F and pinion 0 is never disturbed.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s

1. The combination of the mash-tub A and the vertical central shaft 0therein and mechanism, substantially as described, for rotating saidshaft from the lower end thereof with the non-rotating socket a,extending downwardly from the bottom of the mash-tub, nonrevolvingsleeve B, contained within said.

socket and surrounding said shaft 0, and with the stufling-box h, saidstuffing-box being placed above the bottom of the mash-tub against theoutside of the sleeve B, all arranged so that no part of the body of therotating shaft comes in contact with the mash in the tub, as specified.

2. The combination of the mash-tub A and its vertical central shaft 0with the non-revolving sleeve B, surrounding the lower part of saidshaft, and with stuffing-box h, placed above the bottom of the mash-tub,screws or connecting-rods j, non-revolvingring k, and rotary sleeve G,and mechanism, substantially as described, for revolving the sleeve G,all arranged sothat the non-revolving ring It and the non-revolvingsleeve B are connected with the revolving sleeve G for the purpose ofvertical adjustment, substantially as herein shown and described.

3. In a mash-stirring apparatus, the combination of a scraper-blade Lwith vertical carrying-arms p, pivot 1', and spring .9, thescraper-blade extending above the pivot r farther than below said pivot,so as to be capable of automatic adjustment, substantially as hereinshown and described.

4. The combination, in a mash-stirring apparatus, of the mash-tub A,vertical central shaft 0, and horizontal and vertically-adj ustable armH with the scraper L and pendent rod u, the latter being rigidlyattached to said arm intermediate of the said scraper L and shaft 0, andwith the blades b,projecting therefrom toward the shaft 0 and in closeproximity thereto, so as to prevent the material collecting around saidshaft C, substantially as and for the purpose herein shown anddescribed.

5. The combination of the vertical shaft 0 and mechanism, substantiallyas described, for'revolving it with the vertically-movable sleeve G andscraping mechanism carried by said sleeve G, nuts d also carried by thesleeve G, screws N N, engaging said nuts, pinions to w, carried by saidscrews, central pinion 00, mounted on the main vertical shaft 0 andengaging the pinions w w, frictional wheel y, carried by the centralpinion w, and frictional cones (:1. b and means for engaging said coneswith the frictional wheel 1 whereby the sleeve G can be raised orlowered, substantially as described.

GUSTAV SCHOCK.

V Witnesses:

HARRY M. TURK,

E. L. SHERMAN.

